Machine for turning irregular forms.



A. LEHMANN. MACHINE 1'03 TURNING IRREGULAR FORMS.

APPLICATION FILED MAY 27, 1909. 963,594. Patented July 5, 1910.

7 SHEETS-SHEET 1.

INVENTOR Jdaff Lehman]:

WITNESSES A TTOHWE V8 1': NUERIS PETERS ca, wasmncmu, 1 .1:

A. LEHMANN.

MACHINE FOR TURNING IRREGULAR FORMS.

APPLICATION FILED MAY 27 1909.

Patented July 5, 1910.

7 SHEETS-SHEET 2.

WITNESSES By %M /W W ATTORNE Y5 1m: NORRIS PE'IERS co., WASHINGTON, 1:.c

A. LEHMANN. MACHINE FOB. TURNING IRREGULAR FORMS.

APPLICATION FILED MAY 27, 1909 Patented July 5, 1910.

7 SHBETS-SHEBT 3.

WITNESSES ATTORNEYS THE NpRRIS PETERS :1, wnsulngarou. n. c.

WITNESSES Patented July 5, 1910.

7 SHEETS-SHEET 4.

I INVENTOR fldoqf Lehm cmn ATTORNEYS THE Nwms PETERS cm, wAsHmca'dN, nc.

A. LEHMANN. MACHINE FOR TURNING IRREGULAR rows.

0 1 9 1 5 y m u m m m am 0 9 1 ha Y A M D m I I P N 0 I T A 0 I L P P A9 5 3 6 9 7 SHEETS-SHEET 5.

IA/VENTOR 09030; Lehma n WITNESSES ATTOHNE Y8 1n: MORRIS PETERS ca,wAsmrmrom-n c.

A. LEHMANN.

MACHINE FOR TURNING IRREGULAR FORMS.

APPLIUATION FILED MAY 27, 1909.

Patented July 5, 1910.

7 SHEETS-SHEET 6.

INVENTOB WITNESSES flaolj llehmann ATTORNEYS r: mwms PETERSco.,'wAsmr-'cro/v. n. c.

A. LEHMANN.

MACHINE FOR TURNING IRREGULAR FORMS.

APPLICATION FILED MAY 27, 1909. 963,594. Patented July 5,1910.

'1 SHEETS-SEEM. TV

IN VE N 7 0R ATTORNEYS new and improved UNITED STATES PATENT )FFTCE.

ADOLF LEI-IMANN, OF NEW YGRK, N. 4..

MACHINE FOB TURNING IRREGULAR FGRI/IS.

To all 107mm it may concern:

Be it known that i, inoiir LEHMANN, a citizen of the United States, anda resident of the city of New York, Evergreen, bor ough of Queens, inthe county of Queens and State of New York, have invented a Machine forTurning Irregular Forms, of which the following is a full, clear, andexact description.

The invention relates to machines for turning irregular forms such, forinstance, shown and described in the Letters Patent of the UnitedStates, No. (595,H3, granted to me on March 18, 1902.

The object of the present invention is to provide a new and improvedmachine for simultaneously shaping a. number of irregular forms, such astobacco pipes and like articles, according to a predetermined model, themachine being arranged to automatically stop feeding at the time thework is finished, to allow convenient removal of the finished articlesand replacing of the same by new work, thus permitting the shaping of alarge number of articles accurately in a comparatively short time.

The invention consists of novel features and parts and combinations ofthe same, which will be more fully described hereinafter and thenpointed out in the claims.

A practical embodin'ient of the invention is represented in theaccompanying drawings forming a part of this specification in whichsimilar characters of reference indicate corresponding parts in all theviews.

Figure l is a front elevation of the machine; F 2 is an elevation of therighthand end of the machine; 3 is a like view of the left-hand end ofthe machine; Fig. i is a plan view of the same; Fig. a cross section ofthe same on the line of h l; l (3 is an enlarged transverse section ofpart of the feed mechanism; Fig. 7 is a rear side elevation of the same,the feed screw being shown in section; Fig. 8 is an enlarged plan viewwith parts in section, of the 'ving mechanism for the work and model; f)a cross section of the adjusting means for the cutters and model disk;Fig. l0 is an enlarged sectional plan view of the same on the line l0l0of Fig. J; Fig. 11 is an enlarged cross section of the clamping head forholding the work;

Specification of Letters Patent.

Application filed May 27, 1909.

Patented July 5, 19M).

Serial No. 498,731.

Fig. 12 is an enlarged front end elevation of the same; Fig. 13 is anenlarged sectional side elevation of the carrier for the model; Fig. llis a side ele ation of the same; and Fig. 15 is a sectional plan view ofthe same on the line 15-45 of Fig. 13.

The machine, as illustrated in the drawings, is provided with a model ora pattern A, a model abutment l3 and two rotary cutters C, C, arrangedon opposite sides of the abutment B for shaping two articles D at thetime according to the model or pattern A, it being, however, understoodthat the machine may be provided with a large number of such rotarycutters to furnish a corresponding number of articles at the time.

The model A and the articles D, D are rotatably mounted on a swingingwork frame E, having a longitudinally-cxtending rod E journaled in theside arms F of a counterbalanced swinging frame, having a shaft Fjournaled in suitable bearings arranged on the main f'ame G. On one endof the rod E is secured a rearwardly-extending weighted arm E tooverbalance the work frame E and to cause the same to swing rearwardly,with a view to move the model A against the edge of the disk-shapedabutment B, and to move the work D, 1) against the revoluble cutters C,C, so that the latter cut the work according to the predetermined modelor pattern A.

lYlie-n the machine running the side arms F, F of the feed frame areswung downward, thus causing the work frame i to move bodily in a likedirection and thereby feed the mode]. i l and the work D, D in avertical direction relative to the horizontally-disposed abutment l3 andthe cutters C, The side arms i F of the feed frame are provided withrearwardly-extending weighted arms F, to counterbalance the .feed frameand the work frame E held thereon, and to allow the operator toconveniently move the said frame to an uppermost starting position,after the wor: D has been finished, it being understood that the feedframe is gradually and positively fed downward during the cuttingoperation by the action of a feed mechanism, hereinafter more fullydescribed.

The model A, as shown in the drawings, simulates a tobacco pipe, ispreferably made of metal and is engaged at the top by a center H, heldvertically adjustable in the frame E, and secured in the adjustedposition by a set screw H and the lower end of the model A is providedwith a shank A in axial alinement with the center H and fitting into asocket H (see Figs. 13, 14: and 15), having a portion of its wallforming a clamping jaw H engaged by a set screw H screwing in a ring Hsurrounding the socket H Now on screwing up the set screw 11*, the aw His pressed inward into clamping contact with the shank A to securelyhold the model A in position, and when it is desired to remove the modelA and exchange the same for one of different shape then the set screw His unscrewed to unclamp the shank A and to allow removal of the modeland replacing of the same by another one. The socket H is formed orsecured on the upper end of a spindle H journaled in a suitable bearingarranged on the frame E, and on the lower end of the spindle H issecured a bevel pinion H in mesh with a bevel pinion I secured on ashaft 1, journaled in the work frame E, directly above and parallel withthe rod E as plainly indicated in Fig. 1.

The work D to be shaped in the form of a tobacco pipe by the cutters C,is engaged at its top by a center J, held vertically adjustable in thework frame E and adapted to be secured thereon by a set screw J asplainly shown in Figs. 1, 2 and 3. The bowl D of the work D is engagedat its inner surface by jaws J mounted to slide in a transverse recess J(see Figs. 11 and 12), formed in a stud J attached to a swing arm Jfulcrumed at J G on a head K, provided with a stud K secured in a hollowspindle K by a set screw K the said spindle K being mounted to turn inthe work frame E, and being provided at its lower end with a bevelpinion K in mesh with a bevel pinion 1 secured on a shaft I, so thatwhen the latter is running a simultaneous rotary motion is given to themodel A and the work D. The jaws J are adapted to be moved outward inclamping contact with the inner surface of the bowl D of the work D bythe action of the conical end J G of a screw rod J screw ing in the studJ so that when the stud J is passed into the bowl D and the screw rod Jis screwed up, then the jaws J engage with their roughened or serratedfaces the inner surface of the bowl D thus fastening the bowl inposition on the stud J. The swing arm J is provided with a segmentalslot J through which passes a clamping screw J 9 held in the head K andsecurely holding the swing arm J in any position into which it may bemoved by the operator according to the angular position of the bowl Drelative to the stem of the pipe.

In order to impart a rotary motion to the work frame shaft 1, thefollowing driving gear is provided, special reference being had to Figs.1, 2, 3, t, 5 and 8. On the righthand end of the work frame shaft I isloosely mounted a bevel pinion 1 provided with a clutch member 1*,adapted to be engaged by a clutch member 1 mounted to slide on and toturn with the shaft 1. The clutch member I is engaged by a shifting forkI connected with a shifting lever I fulcrumed on a bearing G heldloosely on the shaft 1. The bevel pinion I is in mesh with a bevelpinion L secured on the upper end of a connecting shaft made in sectionsL L of which the section L telescopes in the tubular section L and thelatter is provided with a key L engaging a key-way L? in the shaftsection L The shaft section L is mounted to turn in the bearing G andthe section L is mounted to turn in a bearing G held loosely on a stud Gattached to the main frame G (see Fig. 8), and on the shaft section L issecured a bevel pinion L in mesh with a bevel pinion L mounted to turnloosely on the stud G and attached to a large gear wheel L in mesh wit-ha pinion N (see Fig. 2), mounted to turn on a stud G adjustably attachedto an arm G fulcrumed loosely on the rod F of the feed frame, the arm Ghaving a slotted extension Gr engaged by a bolt G screwing in the frameGr. By the arrangement described, a pinion N, of larger or smallerdiameter, can be mounted on the stud G to change the speed of thegearing correspondingly. The pinion N is attached to a large gear wheelN in mesh with a pinion N mounted to rotate loosely on the rod F andsecured to a step pulley N connected by a belt N with a step pulley Njournaled on the frame Gr (see Fig. 2), and connected by a belt N with astep pulley i S secured on the main driving shaft 0, journaled insuitable bearings on the rear of the frame G. On the main driving shaft0 are secured fast and loose pulleys 0 0 (see Fig. 4), connected by abelt 0 with other machinery, for imparting a rotary motion to the shaft0. The rotary motion of the shaft 0 is transmitted by the gearingdescribed to the sectional connecting shafts L L to rotate the workframe shaft I at the time the clutch member I is in mesh with the clutchmember 1*. The rotary motion of the shaft I is transmitted by thepinions 1 H and P, K to the spindles H K to rotate the model. A and thework D in unison.

In order to impart motion in a downward direction to the feed frame andthe work frame E carried thereon, the following arrangement is provided,special reference being had to Figs. 1, 2, 8, 4t, 6, 7 and 8. Atransverse feed screw P is journaled in suitable bearings arranged onthe main frame G, and the said feed screw P is adapted to be engaged bya half nut P attached to the free end of an arm P fulcrumed at P on aslide P mounted to slide transversely on the nonthreaded portion P ofthe feed screw P. The slide P is pivotally connected by a link P with anarm P secured on the rod F so that when the half nut P is in engagementwith the rear end of the feed screw P and the latter is rotated then thehalf nut P is moved forwardly and with it the slide P*, so that the linkP and the arm P turn the rod F of the feed frame to swing the side armsF thereof in a downward direction, thus carrying the work frame E andthe parts supported thereon in the same direction. The half nut P isnormally held out of engagement with the feed screw P by a spring Psecured to the slide P and pressing the arm P in an upward direction.lVhen the arm P is pressed downward by the operator bearing down on ahandle P, then the half nut P engages the feed screw P, and the arm P isthus automatically locked in place by a catch Q fulcrumed at Q on theslide P and pressed on by a spring Q the spring catch Q engaging ashoulder P on the arm P Now when the half nut P about reaches theforward end of the feed screw P then the spring catch Q abuts againstthe rear end of a tubular stop Q secured to the frame G, so that thespring catch Q is thrown out of engagement with the shoulder P and thearm P swings upward by the action of its spring P so that the half nut Pdisengages the feed screw P, as shown in Fig. 6. If it is desired torelease the spring catch Q, from the shoulder P with a view to disengagethe half nut P from the feed screw P at any time during its travel fromthe rear end of the feed screw P toward the front end thereof, then useis made by the operator of a rod Q7 sliding in the stop Q to engage thespring catch Q,

and swing the same out of engagement with the shoulder P thus releasingthe arm P In order to turn the feed screw P, the following arrangementis made: On the feed screw P is secured a bevel gear wheel R in meshwith a bevel pinion B secured on the upper end of the shaft B ournaledin suitable bearings arranged on the main frame G, and on the lower endof the shaft B is secured a bevel gear wheel B (see Fig. 1) in mesh witha bevel gear wheel R at tached to one end of a shaft R extendinglongitudinally and journaled in suitable bearings on the main frame G.On the shaft R is secured a spur wheel B (see Figs. 1 and 8) in meshwith a pinion B attached to the hub of the gear wheel L so that when thelatter is rotated, as previously explained, then rotary motion is givenby the pinion B and the gear wheel B to the shaft R and the rotarymotion of the latter is transmitted by the bevel gear wheels R, R to theshaft B which by the bevel pinion B and the bevel gear wheel R rotatesthe feed shaft P.

The rod Q} and the handle P extend to the front of the machine to bewithin convenient reach of the operator, and when the machine is startedthe operator lifts the feed frame into an uppermost position so that thebottom of the model A is at the edge of the model disk B and the halfnut P is at the rear end of the feed screw P. The operator now bearsdown on the handle P, so that the half nut P engages the feed screw Pand is locked in this position by the spring catch Q. engaging theshoulder P As the shaft P rotates it moves the half nut P forward andwith it the slide P*, so that the rod F is gradually turned to swing thefeed frame F downward and with it the work frame E. The cutters C nowcut the work D, the shape of which is governed by the model A travelingon the edge of the model disk B. It is understood that the work frame Eis pressed rearward by the action of the weighted arm E so that thecutters C out properly into the work D to shape the same according tothe model A. When the model A in its descent has reached a lowermostposition, that is, with the upper end opposite the edge of the modeldisk B, then the half nut P is near the front end of the feed screw P,and at this time the spring catch Q, abuts against the stop Q to releasethe arm P so that the spring P swings the arm P upward and disengagesthe half nut P from the feed screw P. The downward feeding of the feedframe F and the work frame E now ceases and the operator can remove thefinished articles and replace the same by new work, after which theabovedescribed operation is repeated, that is, the frames F and E areswung into uppermost positions and the half nut P is rengaged with therear end of the feed screw P.

The tubular stop Q is adjustably secured in a split bearing on the frameG and secured therein by a clamping screw G (see Fig. 6), to allow ofreleasing the half nut P from the feed screw P, according to the heightof the work to be finished at the time. The downward motion of the feedframe F and the work frame E is limited by a stop G secured to the frameG and adapted to be engaged by the shaft E The model disk B and thecutters C, C are rotated from the main shaft 0, and for this purpose themain shaft 0 is provided with pulleys S (see Fig. 4), over which passbelts S also passing over pulleys S on the spindles B, C C of the disk Band the cutters C, C, respectively.

The model disk B and the cutters C, C are mounted for vertical andtransverse adjustment, to allow of adjusting the model disk B and thecutters C, C to the same relative position one to the other and to themodel A and the work D. The adjusting mechanisms for the model disk Band the cutters G, C are alike in construction, so that it suflices todescribe but one in detail, special reference being had to Figs. 9 and10. Each of the spindles B 0 is journaled in a bearing T, mounted toslide up and down on a post T erected on a slide T mounted to slidetransversely in guideways T attached to the frame G. On the guideways Tis mounted to turn an adjusting screw T screwing in a nut T projectingfrom the post T so that when the adjusting screw T is turned by theoperator the slide T and with it the post T and the bearing T are movedin a transverse direction. In the top of the bearing T is journaled avertical adjusting screw T screwing in the post T so that when theoperator turns this adjusting screw T the bearing T is raised or loweredaccording to the direction in which the adjusting screw T is turned.Thus from the foregoing it will be seen that by the arrangementdescribed the model disk B and the cutters C can be raised or lowered ormoved forward or backward, to bring the same in the desired relativepositions previously mentioned.

The operation is as follows: When the main shaft 0 is driven, acontinuous rotary motion is given to the model disk B, the cutters G, C,the feed screw P and the sectional shaft L L but the shaft I, the modelA and the work D are not rotated unless the clutch member I is movedinto mesh with the clutch member I on the loose pinion I, so that thepinion L on the sectional shaft L L rotates the pinion I and by theclutch member I shaft I. Now when the clutch member I is out of meshwith the clutch member I the pinion I simply runs loose on the shaft Iand the latter is not rotated. The operator can now swing the work frameE forwardly for conveniently placing a model A and the blocks of wood orother work D, D in position on the model and work carriers, mounted onthe work frame E, as shown and above explained, and then the operatorswings the feed frame F into its uppermost position and releases thework frame E, to allow the latter to swing rearwardly into operativeposition. It is understood that when the feed frame F is raised by theoperator, the rod F arm P and link I draw the slide P the arm 1? and thehalf nut P rearward, so that the operator on now pressing the handle Pswings the arm P downward, thus moving the half nut P into engagementwith the rear end of the revolving feed screw P, to swing the feed frameF and the work frame E downward. The operator now also moves theshifting lever I to throw the clutch member I into engagement with theclutch member I of the pinion I so that the shaft I is rotated and arotary motion is given to the model A and to the work D, D. The cuttersC, C now out the work to the shape of the model A, and when this is donethe half nut P is automatically thrown out of engagement with the feedscrew P, so that the downward movement of the feed frame F and the rockframe E ceases. The operator now moves the shiftinglever I to disengagethe clutch members 1*, I to stop the rotation of the shaft I, the modelAand the finished work. The operator now swings the work frame E forward,removes the finished work and replaces the same by blocks of wood orother work, and then returns the frames F and E to operative positions,as previously explained, and manipulates the handle P and the shiftinglever I to start the feeding of the frames F and E in a downwarddirection and to rotate the model A and the work D, D, as beforeexplained.

From the foregoing it will be seen that the attendant in charge of themachine only periodically operates the handle P and the shifting lever Iand removes the finished work and replaces the same by new work, but theactual shaping of the articles is completely automatic and requires noattention on the part of the attendant.

Having thus described my invention 1 claim as new and desire to secureby Letters Patent:

1. A machine for turning irregular forms, comprising a revoluble cutter,a revoluble model abutment, a swinging feed frame, a swinging work framepivoted at one end to the end of the feed frame to swing transversely,and adapted to be moved bodily up and down by the movement of the feedframe, the swinging work frame having revoluble means for carrying androtating the work to be engaged by the said cutter, and a revolublemodel mounted on the said swinging Work frame for contact with the saidmodel abutment.

2. A machine for turning irregular forms by revoluble cutters providedwith a swinging work frame having revoluble work-carrying means, acounterbalancing swinging feed frame having a swinging movement towardand from the cutters, the said work frame being journaled at one end inthe end of the feed frame and carried by the movement of the feed framepast the cutters, and a counterbalance for the said work frame to swingthe same toward the cutters.

3. A machine for turning irregular forms by revoluble cutters, providedwit-h a swinging work frame having revoluble work-carrying means, acounterbalancing swinging feed frame having a swinging movement towardand from the cutters, the said work frame being journaled at one end inthe end of the feed frame and adapted to be carried by the movement ofthe feed frame past the cutters, a counterbalance for the said workframe to swing the same toward the cutters, a work-driving shaftjournaled on the said work frame for driving the said work-carryingmeans, a revoluble model mounted on the said work frame and driven fromthe said shaft, and a model abutment for the said model to abut against.

4:. A machine for turning irregular forms, comprising a revolublecutter, a model abutment, a swinging work frame carrying a revolublemodel for engagement with the said abutment, the swinging work framehaving revoluble work-carrying means, a swinging feed frame having aswinging movement toward and from the said cutter and model abutment,the said: work frame being journaled at one end in the end of the feedframe and carried by the movement of the feed frame past the cutter andabutment,.and an overbalancing means connected with the said swingingwork frame, to swing the latter inward for the work to engage the saidcutter and the model to engage the said abutment.

5. A machine for turning irregular forms, comprising a swinging workframe, a counterbalancing swinging feed frame, the said work frame beingjournaled at one end in the end of the feed frame, an overbalancingweight for the said work frame, a model, revoluble model-carrying meanson the said work frame, revoluble work-carrying means on the said workframe, revoluble cutters for engagement by the work, and a revolublemodel abutment for engagement by the said model, the said work framebeing moved past the cutters and the said abutment by the movement ofthe feed frame.

6. A machine for turning irregular forms, comprising a swinging workframe provided with means for rota-tably carrying the work and a model,a counterbalancing swinging feed frame, the said work frame beingjournaled at its lower end in the end of the feed frame and moved up anddown by the movement of said feed frame, and a feed mechanism forimparting movement to the said feed frame.

7. A machine for turning irregular forms, comprising a swinging workframe having a, revoluble carrier for carrying the work, acounterbalancing swinging feed frame, the said work frame beingjournaled at its lower end in the end of the feed frame and moved up anddown thereby, a feed mechanism connected with the said feed frame forimparting a swinging motion thereto, and a counterweight for the saidwork frame to impart a swinging motion to the same inclependently of thesaid feed frame.

8. In a machine for turning irregular forms by revoluble cutters, a feedframe mounted to swing, a swinging work frame pivoted at its lower endto the end of the feed frame, a revoluble work carrier mounted on thework frame, the said work frame being pivoted to swing transversely andadapted to carry the work toward or from the cutters, and a feedmechanism connected with the feed frame for imparting a swinging motionthereto to feed the said work frame bodily downward in the direction ofthe height of the work.

9. A machine for turning irregular forms, comprising a swinging workframe, a revoluble work carrier mounted on the said work frame andadapted to carry the work, a revoluble model carrier mounted on the saidwork frame and carrying a model, a counterbalancing swinging feed frame,the work frame being pivoted at one end to one end of the swinging feedframe, a revoluble feed screw, a half nut for engagement with the saidfeed screw, spring-pressed arm-carrying the said half nut, a slide onwhich the said arm is mounted, and a connection between the said slideand the said feed frame to swing the latter positively in one direction.

10. A machine for turning irregular forms, comprising a swinging workframe, arevoluble work carrier mounted on the said work frame andadapted to carry the work, a revoluble model carrier mounted on the saidwork frame and carrying a model, a counterbalancing swinging feed frame,the work frame being pivoted at one end to the end of the swinging feedframe, a revoluble feed screw, a half nut for engagement with the saidfeed screw, a spring-pressed arm carrying the said half nut, a slide onwhich the said arm is mounted, a connection between the said slide andthe said feed frame to swing the latter positively in one direction, ashaft journaled in the said work frame and geared with the said work andthe said model carriers, a main driving shaft, and self-adjusting meansconnecting the said main driving shaft with the said work frame shaft.

11. A machine for turning irregular forms, comprising a swinging workframe, a revoluble work carrier mounted on the said work frame andadapted to carry the work, a revoluble model carrier mounted on the saidwork frame and carrying a model, a counterbalancing swinging feed frame,the work frame being pivoted at one end to the end of the feed frame, arevoluble feed screw, a half nut for engagement with the said feedscrew, a spring-pressed arm carrying the said half nut, a slide on whichthe said arm is mounted, a connection between the said slide and thesaid feed frame to swing the latter positively in one direction, aspring catch on the said slide for engagement with the said half nutarm, and a stop for the said catch to throw the latter out of lockingengagement with the said half nut arm.

12. A machine for turning irregular forms, comprising a swinging workframe, a revoluble work carrier mounted on the said work frame andadapted to carry the work, a revoluble model carrier mounted on the saidwork frame and carrying a model, a counterbalancing swinging feed frame,the work frame being pivoted at one end to the end of the feed frame, arevoluble feed screw, a half nut for engagement with the said feedscrew, a spring-pressed arm carrying the said half nut, a slide on whichthe said arm is mounted, a connection between the said slide and thesaid feed frame to swing the latter positively in one direction, aspring catch on the said slide for engagement with the said half nutarm, a tubular fixed stop for engagement by the said catch to throw thelatter out of locking engagement with the said half nut arm, and amanually-controlled stop slidable in the tubular stop for actuating thesaid catch.

13. A machine for turning irregular forms, comprising a swinging workframe, a revoluble work carrier mounted on the said work frame andadapted to carry the work, a revoluble model carrier mounted on the saidwork frame and carrying a model, a counterbalancing swinging feed frame,the work frame being pivoted at one end to the end of the swinging feedframe, a revoluble feed screw, a half nut for engagement with the saidfeed screw, a spring-pressed arm carrying the said half nut, a slide onwhich the said arm is mounted, a connection be tween the said slide andthe said feed frame to swing the latter positively in one direction, ashaft journaled in the said work frame and geared with the said work andthe said model carriers, a main driving shaft and self-adjusting meansconnecting the said main driving shaft with the said work frame shaft,and a gearing connecting the said main driving shaft with the said feedscrew.

14. A machine for turning irregular forms provided with a swinging workframe having revoluble carriers for carrying the work, a feed framemounted to swing, the work frame being pivoted at one end to the end ofthe feed frame, a driven feed screw, a half nut for engagement with thesaid feed screw, a slide carrying the said half nut, and a connectionbetween the said slide and the said feed frame to swing the latter tofeed the work frame axially of the work.

15. A machine for turning irregular forms, comprising a main frame, arevoluble cutter mounted thereon, a counterbalancing swinging feed framejournaled in the main frame below the cutter to swing up and down, awork frame having a revoluble carrier for the work and extending infront of the cutter, the work frame being journaled at its lower end inthe front end of the feed frame to swing toward and from the cutter, thesaid work frame being moved vertically by the movement of the feed frameto move the work past the cutter, a weight connected with the work frameto swing the same rearwardly toward the cutter, and means for swingingthe feed frame to cause the work frame to move bodily in a downwarddirection to feed the work to the cutter.

16. A machine for turning irregular forms, comprising a main frame, ahorizontally disposed revoluble cutter and a horizontally disposedrevoluble model abutment mounted on the main frame, a counterbalancingfeed frame having a shaft journaled in the main frame below the cutterand abutment, the feed frame being mounted to swing up and down, a Workframe carrying the work and a model, and extending in front of thecutter and model abutment, the work frame being journaled at its lowerend in the front end of the feed frame to swing thereon toward and fromthe cutter and abutment, the said work frame being moved vertically bythe movement of the feed frame, a weight connected with the work frameto swing the same rearwardly toward the cutter and abutment, and a feedmechanism for swinging the feed frame to cause the work frame to movebodily in a downward direction to feed the work and the model in avertical direction relative to the cutter and the abutment.

17. A machine for turning irregular forms, comprising a cutter, aswinging work frame for carrying the work and a model, acounterbalancing swinging feed frame, the said work frame beingjournaled at its lower end in the end of the feed frame and adapted toswing toward and from the cutter, the said work frame being moved up anddown by the movement of said feed frame to carry the work past the edgeof the cutter, and a feed mechanism for imparting movement to the saidfeed frame.

18. A machine for turning irregular forms, comprising a cutter, aswinging work frame, a counterbalancing swinging feed frame, the workframe being journaled at one end in the end of the feed frame, and movedup and down by the movement of said feed frame to carry the work pastthe cutter, a feed mechanism connected with the said feed frame forimparting a swinging motion thereto, and a counterweight for the saidwork frame to impart a swinging motion to the same toward the cutterindependently of the said feed frame.

19. A machine for turning irregular forms, comprising horizontallydisposed revoluble cutters, a feed frame mounted to swing, a swingingwork frame pivoted at one end to one end of the feed frame and Intestimony whereof I have signed my adapted to carry the work toward orfrom name to this specification in the presence of 10 the cutters and afeed mechanism connected two subscribing witnesses.

with the feed frame for im artin a swin a ing motion thereto to mov thesaid woii k ADOLF LEHMANN' frame bodily downward to feed the work inWitnesses:

a vertical direction relative to the said THno. G. Hosrnn,

cutters. PHILIP D. RoLLHAUs.

